murders in northern mexico. >> all we know is the mexico authorities have captured somebody and they have him detained and who possibly had something to do with david's murder. and also, the other murders along the board. >> reporter: hartley that she has yet to hear from u.s. or mexico an officials about the arrest. >> we always have to be hopeful. this will move forward to him being prosecuted or david's remains being found. finding some closure. there is comfort in that. knowing that david hasn't been forgotten. >> hartley said he doesn't know whether martinez will be brought to trial for her husband's murder or any of the other crimes where he remains a suspect. >> that includes the slaughter of 72 migrants in the northern state in 2010. >>> right now at 6:00, the first lady's message to voters in virginia. >>> jerry sandusky will spend the rest of his life in prison but he is still defiant and claim he is the victim. >> if you're planning to go to the first postseason home game for the nats, you may have to get a little creative. >>> mitt romney in the polls.